Bookbinder



Jan 14, 1936- ly SPINNER Er AL BOOKBINDER Filed March ll, 19255 Patented Jan. 14, 1936 UNITED STATES PATENT OFFICE BOOKBINDER Isidore Spinner, Chicago, and Philip V. Spinner, Wilmette, Ill.

This invention relates to improvements in book binders, and more particularly to a binder for spiral bound or like multiring stitched sheets or llers.

The object of the invention is to provide a cover or binder especially adapted tov be used in connection with filler sheets or leaves previously bound into book form by the already mentioned spiral binding, thus giving the combination the appearance of a permanently bound Volume, while affording the convenience of a replaceable ller.

And in this connection it is to be observed at the outset that the so-called spiral binding diifers from the ordinary loose-leaf binding as exemplified by the familiar ring binder, in that the sheets are bound into book form by a spiral binder of stiff wire threaded through marginal perforations, this binder acting to stitch the leaves somewhat loosely together, although with sufficient security to obviate the need for any additional binding. Moreover the spiral binder forms the backbone of the book, and hence is exposed regardless of the covers used which are but perforated sheets of a heavier and/or stiffer material, whereas the ordinary ring binder is a complete cover equipped with two or more split rings passing through holes punched in the sheets. For certain uses, the spiral binding is not objectionable, as for example in making up stenographic note, memorandum and like books of a more or less inexpensive and temporary character, but for the better grade of books, such as ledgers, diaries and books of permanent record, there is a demand for the more conventional style of binding, in combination with the spiral type of binding for the contents, and the present disclosure seeks to provide such a combination.

With this introductionv to the subject matter of the invention, a preferred embodiment thereof will be described in connection with the accompanying drawing, in which Figure l is a view in elevation of a spiral bound iiller mounted within a cover or binder.

Figure 2 is a view in end elevation of the combination shown in Figure 1.

Figures 3 and 4 are enlarged detail views in cross section taken on lines 3 3 and 4 4, respectively, of Figure 1.

Figure 5 is a view in side elevation o1' the parts of the fastening device.

Figure 6 is a perspective View of the fastening device with the rod partly removed.

The completely assembled book comprises a cover member l and the ller 2 therefor, consisting of a sheaf of leaves or printed leaves, as the case-may be. As already explained, the ller is a self-contained unit or bound book by reason of the spiral binding or stitching 3 along one edge, although in this'instance, the outer cover sheets would be omitted. Ma'nifestly, then, the filler sheets are bound without regard to their subsequent 'mounting within the cover or binder except perhaps for the character of the cover sheets used, if any. In 4any case, thc sheets are rst stacked and punched along the edges to be bound, with a multiplicity of small .holes or perforations 4 spaced fairly close together and near the edge of the sheets. Then the helix or spiral of stiff wire 3 is threaded lengthwise through the perforations, the spacing of the perforations being the same as the pitchA of the helix, so that by starting at one end and turning the spiral in the proper direction, it threads itself throughout the length of the sheets, whereupon the extremities 3a, 3f are bent back and inwardly so as to lock the helix against working endwise and out of the perforations. It will be noted that the character of the spiral 3 is slightly greater tha-n the thickness of the bound sheets, with the result that at least one-half the circumference of the spiral is exposed along the bound edge, and a considerable portion of the space included by the spiral is open beyond the edges of the leaves.

The cover or binder I may be of any suitable material and construction, consisting of front and back cover sections 5 and 6, and a backbone 'l having ilexibly hinged connections with the cover sections on either side. By preference, the binder is slightly larger than the filler or contents so that marginal portions thereof project beyond the three sides of the ller as shown in Figure l. Moreover, the width of the backbone of the binder is substantially equal to the thickness of the ller, or more accurately, the diameter of the spiral binding wire 3 which in turn is slightly greater than the thickness ofthe sheets in order to permit them to be turned easily without binding.

Now, extending the length of the backbone on the inside of the binder is a flat metal bar 8 terminating a short distance inwardly from each end of said backbone in short upstanding brackets 8a, 8 bent at right angles to the main body of the bar, which is riveted as at 9, Figure 3, at two or more points along the backbone of the binder. By preference the backbone is reinforcedby `s. suitable stiilening strip llthrough than the bar l so that each end projects ashortl' distance beyond the end brackets 8 9, 8* whenthewhich the rivets are priven, their heads!` being preferably concealed beneath the material covering the outside of the binder. j"

Located centrally of the upstandlng brackets 8 at end of the bar 8 arerelatively'large holes' l, their centers beingspaced welloutwardly from the base of the brackets, so that there will behample clearance between theh holes and the body'of the bar. Extending lengthwise kof the bar and insertable endwise through .the

end brackets thereof is a round metaybrodl lilA somewhat smaller in diameter than that of the holes l, in fact, the rod is just large .enough `to be quite stift without addingI unnecessary weight. -The length of the rodis slightly g'rater rod is in place. The ends of'the rodbare threaded to receive cylindric shaped tii'umb nuts "Ill having an enlarged-milled head-"IP and a ,boss or-reduced extension- I Ib, theformer. being A materia diameter umn that'of the holes sbin .thebrackets 8*, and the latter slightly less, so

'lb bringing the shoulders formed by the heads il* flush against the outer faces of the :brakketal.. l v As additional-supporting-meansfor the rod` I 0, the bar is provided with integral lugs nl2 stamped out and bent upwardly at points spaced.,

inwardly` fromv the ends thereof. shown in Figure 5, there are two of these lugs approxi" '-mately half way between the center and ends ot the bar, although the number and spacing of these lugs may be varied in different sizes,

oi binders. The primary purpose of these lugs is to support the rod intermediate its ends, and

I2* 1n alignment with hence the lugs have holes of the bar, but smaller those in the end-brackets in diameter, that is, just largey enough to permit the rod to pass through. Another and equally important function of these lugs is vto act as stop members to hold lthe spiral bound filler against moveme in the binder, as will presently be noted. 1

Now, that the filler is to be inserted in the binder, it is onlynecessary to remove vthe nut from one and of the rod and withdraw it, endwise from its supporting bar, whereupon the filler 2 is placed in position with the spiral binding extending lengthwise of the bar. and between the end brackets 8, l. Therod is then replaced by .threading the free end through the aligned holes in the'brackets Il, and lugs I2, and

edges of the leaves. 1 fasten the filler in the binder, one or both nuts at the sametimethroughthe open space extending the length of the spiral 3 beyond the And finally, to securely are drawn up tightly after inserting the bushing- Alike extensions through thelarge holes in the end brackets as shown in Figure 5. This places both the bar and the rod under tension, -thus making the complete fastening .device rigid and securing the parts against loosening. Moreover,

bythisarrangunentthshsadsofthethumbnuts t on mounting the nuts on the outer ends of i. the rod .the vboss Il will pass through the'holes are located inwardly from the edges of tl binder, so none of the parts are exposed when the binder is closed.

Andiinallmthe lugs I2 projecting between the turns :of the spiralwill invariably bear against the nearest turn, thus preventing any appreciable'endwise shifting of the Ifiller lengthwise on `ythe rod,-it being observed particularly that while the brackets 8* at the ends of the bar would (ordinarily act in this capacity, in practice the 'extreme ends of the helix usually stop short of the `edges of the iiller and frequently there is some discrepancy-in the lengths of the spiral in 'dierentnllers of,l the same page size. Hence it" contact between the ends of the spiral and the en'd"byr'a'ckets t* were the only means for. holding the filler securely in the binder, there wouldinvariably be lsome end play which would interfere with thesfree turning of the pages.' Th'e lugs, therefore, assist materially in properly. centering thenller in-the binder andgholding it againstsubsequent movement on the rod.

'Ijhus for"A mounting' spiral bound sheafs.o r

.fillers lin separate binders, the fastening device hereirndisclosed aifordsa very practical means of meeting the demand lfor a ,book having the appearance lof a permanently bound.bookbu t .removably insertable through holes -in said brackets and adapted to pass through said spiral bindingwhen the Asame is positioned lengthwise-0 oi!` said backbone between said brackets, and a lug -projecting from said bar intermediate its ends and having a hole in alignment with the holes in said brackets,'said lug acting to support said rod intermediate its`ends and to pro- 5 ject between adjacent turns of said spiral binding.

-2. In a book binder, the combination with a filler consisting of leaves bound together along one edge with a spiral binding of stiff wire, of a 50 binder comprising cover sections and a backbone, a bar extending lengthwise of said backbone and having its end portions bent to provide brackets --projecting at right angles to .the inner face oi.'

said backbone'adjacent the ends thereof, and 55 a rod provided with a removable nut at one end, permitting the same to be inserted endwise through holes in said brackets and said spiral binding when the same is positioned lengthwise of said backbone between said brackets, said bar 60 being provided with integral lugs spaced apart at intervals intermediate its ends and projecting between adjacent turns of said binding to support said rod.

ISIDORE SPINNER. PHILIP V. 

